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2014
Journal Article
Titel

Prediction of damage in cold bulk forming processes

Abstract
In the present paper a practically relevant extension of the known modelling methods with regard to the description of forming limits of steels typically used in the cold bulk forming is developed and implemented in a commercial finite element code Abaqus. The modeling approach is based on the so-called micromechanical damage concepts which represent the microstructure evolution more detailed than phenomenological models and, therefore, provide better prediction of damage and failure during the forming process. Particularly, the well-known damage models of Gurson as well as Gologanu-Leblond are considered. It is shown that in combination with fracture criteria such models are able to describe failure in bulk forming.
Author(s)
Zapara, M.
Augenstein, E.
Helm, D.
Zeitschrift
Proceedings in applied mathematics and mechanics. PAMM
Funder
Bundesministerium für Wirtschaft und Technolgie BMWi (Deutschland)
Konferenz
International Association of Applied Mathematics and Mechanics (GAMM Annual Meeting) 2014
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DOI
10.1002/pamm.201410492
Externer Link
Externer Link
Language
English
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Fraunhofer-Institut für Werkstoffmechanik IWM
Tags
  • metals

  • bulk forming

  • voids

  • damage

  • failure

  • simulations

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